LOL Sorry Lee :/
Well I'll explain the system to make it clear for you guys
Primary School (years and ages)
Yr. 1 - Age 5-6
Yr. 2 - Age 6-7
Yr. 3 - Age 7-8
Yr. 4 - Age 8-9
Yr. 5 - Age 9-10
Yr. 6 - Age 10-11
Secondary School
Yr. 7 - Age 11-12
Yr. 8 - Age 12-13
Yr. 9 - Age 13-14
Yr. 10 - Age 14-15
Yr. 11 - Age 15-16
Sixth form/ college
Yr. 12/1st year college - 16-17
Yr. 13/2nd year college - 17-18
and then uni
and then college, and so on.